import random

# v=['' for i in range(6)]
# print(v)

# a=[1,2,3,4,5]
# b=a.append(6)
# print(a)
# print(b)

# print(random.randint(0,256))

a=[1,2,3]
b=[4,5,6]
c=[7,8,9]
d=a+b+c
print(d)